Perhaps you should try some spelling variations:
vulgarian » bulgarian, bulgarians, vulgaridad
bulgariia » bulgaria, bulgarica, bulgaricae, bulgareiia, bulgariaiia, bulgarieiia
bulgar » bulgare, bulgaria, bulgarie
vulgaris » bulgaria
bulger » bulges

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((vulgarian OR bulgariia) OR ((((bulgar OR vulgar) OR vulgaris) OR bulge) OR bulger)).
• Adding a wildcard symbol may retrieve word variants: ((vulgarian or bulgariia) or ((((bulgar or vulgar) or vulgaris) or bulge) or bulger))*.